Pump for lubricating systems and the like



Oct. 27, 1931; 'r. w. HALLERBERG 1,829,042

' PUMP FOR wanxcmme SYSTEMS AND THE LIKE Filed May 13, 1929 2 Sheets-Sheet 1 mvENfoR Theodore d1! wile/bay Oct. 27, 1931.

T. w. HALLERBERG 1,829,042

PUMP FOR LUBRIGATING SYSTEMS AND THE LIKE Filed May 15,

2 Sheets-Sheet 2 INVEIFVTOR 7 10 7/25 dare [M174 zrfie/ A TTORNE Patented Oct. 27, 1931 UNITED STATES PATENT" OFFICE] THEODORE w. HALLERBERG, or BATTLE CREEK, MICHIGAN,

ssrenon. T nuance- TION DEVICES, INCORPORATED, OF BATTLE CREEK, MICHIGAN rumrron mrnmon'rme SYSTEMS AND THE LIKE Application filed May 13, 1929. Serial No. 362,540.

' very simple, economical and durable in its parts. I

Third, to provide a structure in which the system is relieved of pressure through manipulation of the plunger.

Objects pertaining to details and economies of my invention will definitely appear from the description to follow. The invention is defined in the claims. I I A structure which embodies the features of my invention is clearly illustrated in the accompanying drawings, in which:

Fig. l is a front elevation of a pump-embodying the features of my invention.

Fig. 2 is a plan view, the handle or actuating lever being in section on line 22 of Fig. y

' Fig. 3 is a fragmentary view partially in vertical section on line 33 of Fig. 2, the actuating lever being shown in its pressure releasing position in full lines and in one pumping position by dotted lines.

My improved pump in the embodiment illustrated comprises a lubricant reservoir 1 provided with a 'bottom member 2 having a horizontal bore therein constituting the cylinder .Thecylinder is provided with I a discharge port lat its inner end, an inlet port 5 opening to the reservoir 1 and a relief.

port 6, the relief port being substantially spaced from the discharge port and the inlet port being located between the discharge and relief ports, preferably nearer to the relief ort.

p The discharge port 4 is provided with a ballcheck valve 7 normally held in seated position by means of the coiled spring 8. The discharge or delivery conduit 9 leads to the parts to be lubricated.

The port 6 is connected to the discharge conduit by a passage 10 formed in the bottom member 2.

The plunger 11 is actuated by the pump handle or actuating lever12 which is mounted on the link 13 pivoted at 14 on the side of the reservoir and connected to the lever by the pivot 15. This lever is connected to the plunger bymeans of the pivot 16. The plun-,

ger is of suchlength'that it constitutes a valve for the relief port during the working strokes of the plunger. v

To prevent the opening of the relief. port during the operation ofthe pump as such, I provide a stop means consisting in the embodiment illustrated of the keeper 1? on;the side of the reservoir and a catch sleeve 18 slidably mounted on the lever to be dropped into engagement with the keeper as shown in Figs. 2 and 3 in full lines, or to'be withdrawn from the, keeper and dropped down upon the supporting; pin 19, as shown by dottedlines in Fig. 3, in which position it coacts as a stop with the keeper limiting the return stroke of the plunger to the position indicated by dotted lines in Fig. In this position the relief port is closed, the inlet port, however, being open to permit the charge of lubricant to enter the cylinder.

On the initial part of the stroke of the plunger from the positionshown :by dotted lines in Fig. 3 the port 5 is closed and the charge forced through the valve discharge port. After completion of the lubricating operation, to relieve the system it is only necessary to completely retract the plunger from the position indicated by full lines in Fig. 3.

Structures embodying my improvements are very simple and economical to produce and also are simple and easy to manipulate.

Further, they may be made very compact.

I have illustrated' my improvements in an embodiment especially designed for use in motor vehicle lubricating systems. I have not attempted to illustrate or describe varicontemplate as it is believed that thisv disclosurewill enable those. skilled in the art to embody or ad may bedesired. I

apt my improvements as.

ous'modifications and adaptations whichI Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a pump for lubricating systems, the combination of a lubricant reservoir provided with a bottom having a bore therein constituting a pump cylinder, there bein a discharge port provided with a check vtlve at the inner end of said cylinder, a pressure relief port substantially spaced from said discharge port, an inlet port from said reservoir located between said discharge and relief ports, and a delivery passage in com munication with said discharge and relief ports, a plunger constituting a valve for said relief and inlet ports, an actuating lever pivotally connected to the outer end of said plunger,la supporting link for said lever pivotally mounted on said reservoir, a keeper on the side of said reservoir, and a catch sleeve slidably mounted on said lever to be engaged with said keeper for holding said plunger in its relief port opening position, said catch when disengaged from said keeper constituting a stop coacting with the keeper to limit the stroke of the plunger, thereby preventing the opening of said relief port.

2. In a pump for lubricating systems, the combination of a lubricant, reservoir provided with a bottom having a bore therein constituting a pump cylinder, therebeing a discharge port provided with a check valve at the inner end of said cylinder, a pressure relief port substantially spaced from said discharge port, an inlet portfrom said reservoir located between said discharge and relief ports, and a delivery passage in communication with said discharge and relief ports, a plunger constituting a valve for said relief and inlet ports, an actuating lever for said plunger, a keeper on the side of said reservoir, and a catch adjustably mounted on said lever to be engaged with said keeper for holding said plunger in its relief port opening position, said catch when disengaged from said keeper constituting a stop coacting with the keeper to limit the stroke of the plunger, thereby preventing the opening of said relief port.

3. In a pump for lubricating systems, the combination of a lubricant reservoir provided with a bottom having a bore therein constituting a pump cylinder, there being a discharge port provided with a check valve at the inner end of said cylinder, a pressure relief port substantially spaced from said discharge port, an inlet port from said reservoir located between said discharge and relief ports, and a delivery passage in communication with said discharge and relief ports, a plunger constituting a valve for said relief and inlet ports, and means for limiting the strike'of said plunger to prevent the opening of said relief port.

at. In a pump of the class described, the

combination of a lubricant supply reservoir, a pump cylinder provided with a valved discharge port at its inner end, a relief portsubstantially spaced from said discharge port and an inlet port from said supply reservoir opening to said cylinder intermediate its said discharge and relief ports, there being a discharge passage communicating with said discharge and relief ports, a plunger constituting a valve for said relief and inlet ports, an

actuating lever pivotally connected to the outer end of said plunger, a supporting link for said lever pivotally mounted on said reservoir, a keeper on the side of said reservoir, and a catch adjustably mounted 011 said lever to be engaged with said keeper for holding said plunger in its relief port opening position, said catch when disengaged from said keeper constituting a stop coacting with the keeper to limit the stroke of the plunger, thereby preventing the opening of said relief ort.

p 5. In a pump of the class described, the combination of a lubricant supply reservoir, a pump cylinder provided with a valved discharge port at its inner end, a relief port substantially spaced from said discharge port and an inlet port from said supply reservoir opening to said cylinder intermediate its said discharge and relief ports, there being a d scharge passage communicating with said discharge and relief ports, a plunger constituting a valve for said relief and inlet ports, an actuating lever for said plunger, a keeper on the side of said reservoir, and a catch adjustably mounted on said lever to be engaged with said keeper for holding said plunger in its relief port opening position, said catch when disengaged from said keeper constituting a stop coacting with the keeper to limit the stroke of the plunger, thereby preventing the opening of said relief port.

6. In a pump of the class described, the combination of a lubricant supply reservoir, a pump cylinder provided with a valved dis charge port at its inner end, a relief port sub stantially spaced from said discharge port and an inlet port from said supply reservoir opening to said cylinder intermediate its said discharge and relief ports, there being a discharge passage communicating with said discharge and relief ports, a plunger coacting with said cylinder and adapted to constitute a valve for said relief port, the relief port being open when the plunger is in its fully retracted position, and means for limiting the stroke of the plunger to prevent the opening of said relief port.

In witness whereof I have hereunto set my hand.

THEODORE W. HALLERBERG. 

